Method oe staking baby pants



Dec; 28,1926. 1,612,614

A. 1 COLLINS METHOD OF MAKING BABY PANTS Filed August 18, 1925 3 Sheets-Shget 1 Alikli'E ('alldrz .s

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- A. E. COLLINS METHOD OF MAKING BABY PANTS Filed August 18, 1925 3 Sheets-Sheet;

. Inventor: ArihurE. Collins,

15%. W M W I Patented Dec. 21%, 192?.

rarer ARTHUR E. COLLINS, 0F CUYAHGGA FALLS, OHIO, ASSIG-NGR' TO THE MILLER RUBBER COMPANY, OF AKRON, OHIO, A. CORPGE-ATIUN 0F OHIO.

IJIETI-IQID OF IWAKING BABY PANTS.

Application filed August 18, 1935. Serial No. 50,953.

My present invention relates to a method of and apparatus for the manufacture of rubber garments known to the trade as baby pants.

The principal object of the invention is the manufacture of articles of the type described, which will not have a seam where the greatest stress is applied in wear, and which can otherwise be manufactured cheaply and easily.

To this end the invent-ion includes apparatus for furnishing a tube of unvulcanized rubber to a die, which die cuts from the tube the articles. The die is so constructed and arranged that in the cutting operation one portion of the garment is at the same time seamed so that upon vulcanization this edge of the garment becomes permanently united. The arrangement of the cutting edges is so fixed that that portion of the garment between the leg openings and which normally bears the wear strain, is composed of a folded edge without seams.

The invention further consists in the novel arrangement, combination and structure of parts whereby the above invention is put into effect.

I have illustrated in the accompanying drawings an embodiment which has been found to be satisfactory, although obviously I do not wish to .be limited thereto, as it merely illustrates the principle involved.

In the drawings Figure 1 is a diagrammatic View showing the'various operations and a general layout of the apparatus used to carry out this invention.

Figure 2 is a plan view of the doubled stock showing the lines of cutting.

Figure 3 is a diagrammatic view of the folding element.

Figure e is a detail of the doubled stock showing the lines of cutting.

Figure 5 is a detailshowing the brake mechanism.

Figure 6 isv a view of a finished article.

Referring now with particularity to the drawings, I make use of a roll 1 carrying a length of unvulcanized rubber 2 calendered to the proper thickness in the usual manner and of the proper width. The stock roll is mounted in bearings?) carried by the frame 4: for free rotation, although it has been found desirable to apply a brake consisting of a weight 5 and flexible cable 6, the other end of the cable being made fast, as at 7. It will be noted that the cable 6 overlies-a portion of the roll 1 and prevents undue unwinding ofthe stock 2, except as is normally pulled off by the feed rolls to be more fully described hereinafter.

The stock is drawn from the roll 1 by a hardened steel anvil roll 8 driven by a belt 9 from any suitable source (not shown)- Adjacent the anvil roll and preferably mounted to one side thereof, isan idle roll 10 preferablyof rubber pressed againstthe anvil roll 8 by means of the spring 11. This gives. the proper traction between the anvil roll 8- and the stock 2 so that the latter may be drawn from the stock roll 1.

Intermediatethe stock roll 1 and the anvil roll 8' I" provide a. doubling folder indicated generally at 12, which consists of a- V-shaped pieceof steel 13 having, a rounded point and mounted on a supporting bracket 14. A pair of complemental steel bars 15 and 16 are pivoted to the bracket 14 and designed to be swung away from or towards the V block 13 when it is desired to thread up the device,

or hold the bars in locked relation in proximity to theblock. A clamp bolt 17 is car ried by one of the bars, and is adapted to engage a: slot 18 in the other bar. It will be noted that in closed or clamped position the three parts 15, 16 and 13 form a guide slot of uniform width designed to be. slightly greater than the thickness of the stock,

whereby the stock may pass throughwitlr out wrinkling, yet which will be folded to one-half the width in which it exists on the stock roll 1.

A cutter of the pinch cutting type, well known in the art, is shown at 19 mounted upon an arm 20 pivoted to the element 21,

and a spring 22 is utilized to maintain pressure between the cutter 19 and the tubed stock passing over the anvil roll 8. The operation of the cutter 19 is to cut the tube stock to the proper width and temporarily seam together the open edges, thereby forming a flat tube. This also prevents thestock from crawling on itself.

The tube of unvulcanized rubber of uni form width drops from beneath the rubber roll onto a guidingslide 23 and from thence I onto the table 2 1 Where it is allowed to accumulate until ready for the next action.

A. feed roller 25 in connection with an idle roll 26 resting thereon, takes the accumulated tube stock from the table 24 for the next op eration. The feed roll is provided with a ratchet 27 and pawl 28 carried on the arm- 29, which is actuated by the connecting rod 30 and eccentric mechanism 31 from any suitable source. It will be apparent that the mechanism is designed to rotate the feed roll upon every down stroke of the connecting rod 30 a distance equal to the width of the dies used to cut the stock. A guide 32 is interposed between the table 2d and the feed roll 25 in order to insure that the stock is properly fed.

The die consists of a press rain 33 and an anvil plate 34:, suitably mounted upon a frame 35 at an angle to the horizontal in order that gravity may assist in feeding the tube stock. The press ram is operated by any desired mechanism and is adapted to approach its anvil plate 34 while the feed roll 25 is stationary.

The cutting edges of the ram 33 are of two types, those having a broad cutting face, and those having a sharper edge. As will be well recognized in this art, the broad blunt edge makes a permanent seam where the urvulcanized rubber is pinched, while that part out by the sharper edge is only lightly seamed together.

The tube stock is shown at 36, the lines A and A representing that portion of the tube 36 cut by the broad blunt edge of the die, and the lines B, B that part of the tube cut by the sharper edges. As a result of this operation, an article is cut from the tube 36 of approximately hexagonal shape, two edges of which, A and A, are permanently seamed together, three edges, B, B, and C, lightly seamed together, and one edge D, folded and without a seam.

After passing from the machine the articles are separated from the scrap material by hand and the edges B, B and C opened by pulling them apart. This can readily be accomplished, as these edges have been cut by sharp instrument. Bindings are now applied to reinforce the edges A, A, and the body and limb receiving openings C, B and B, respectively. The article thus produced then passes through the ordinary vulcanizing process, as well known in the art, and the deviceis then ready for use.

It will be obvious that an article has thus been produced with the minimum of operations, with very ordinary machinery and equipment, and in a manner to insure uniformity and strength. It will be noted that the edge D on which the most of the strain is put while the article is in use, is not seamed, and is, therefore, much stronger than an article of the same type in which a seam occurs at this point.

Having thus described my invention, what I claim is 1. The herein described steps in the method of making rubber articles of wearing apparel which consist in folding a sheet of unvulcanized rubber upon itself and making spaced cuts extending from the folded edge to the opposite edge to sever a garment forming blank, port-ions of the severed edges of the blank being lightly seamed together during the cutting action and other portions permanently seamed together, separating said lightly seamed portions to form limb openings and thereafter vulcanizing the article.

2. The herein described steps in the method of making rubber articles of wearing apparel which consists in folding a sheet of unvulcanized rubber upon itself, trimming the edges opposite the line of fold and simultaneously temporarily uniting them, making spaced cuts from said line of fold to the said line of temporary connection and to provide an article forming blank and simultaneously firmly uniting portions of the cut edges and temporarily uniting other por tions, separating all the temporarily joined edges, and finally vulcanizing the article.

3. he herein described steps in the meth 0d of forming rubber articles of wearing apparel of the trunk type which consist in folding a sheet of unvulcanized rubber upon itself, to form a double ply, simultaneously trimming the edges opposite the line of fold and temporarily uniting them to hold them in determined relation and dieing out article blanks from said two ply sheet by cuts extending from the line of fold to and intersecting the said edges opposite the line of fold.

4. The herein described steps in the method of forming rubber articles which comprise progressively folding a sheet of unvulcanized rubber to form a two ply sheet, progressively trimming and simultaneously uniting the edges opposite the line of fold, and successively dieing the article blanks from said two ply sheet.

5. The herein described steps in the method of forming rubber articles which coinprise progressively folding a sheet of unvulcanized rubber to form two ply sheet progressively trimming and simultaneously temporarily uniting the edges opposite the line of fold, successively dieing ar icle blanks from said two ply sheet with portions of the died out edges temporarily united and other portions permanently united, and separating the temporarily united edges.

In testimony whereof, I aliix my signature.

ARTHUR E. COLLINS. 

